A description is given of progress being made in the US Department of Transportation's Integrated Corridor Management (ICM) project which allows agencies to optimise the use of available infrastructure by redirecting travellers to under-utilised capacity. Eight pioneer sites were used to develop the vision, goals and operation concepts for the system. An Analysis, Modelling and Simulation (AMS) methodology was then developed which will enable partner states to identify the strategies most applicable to their needs. The methodology uses three levels of detail: macroscopic models which consider regional travel patterns and modal shift, mesoscopic models which evaluate more targeted strategies and microscopic modes to assess the impact of individual traffic control strategies at particular locations. ICM strategies being evaluated at 3 pioneer sites, Dallas, Minneapolis andSan Diego are listed. Use of the AMS methodology at these sites and at atest corridor has already identified a number of important challenges. Those relating to data, model calibration, modal shift and traveller information are briefly discussed.
Samenvatting